General programming

• http://cboard.cprogramming.com | CBoard

  A very good programming board, currently has over 17,000 users; there is usually at least 5 active users online at any one time. The main website is at http://www.cprogramming.com/.

• http://nehe.gamedev.net/ | NeHe

  The reference for everything OpenGL, pretty much. Very good tutorials, although they are Windows-based. Everything there applies to Linux/Mac with slight modifications.

Useful tools

• http://www.bloodshed.net/devcpp.html | Dev-C++

  The home of Dev-C++. Dev-C++ (or Dev) is an IDE for C and C++. It uses either the MinGW or the Cygwin compilers. Free, as well. Although, if you like it, they encourage you to donate $25. Development has stopped, or at the very least, slowed to a crawl.

• http://dwks.theprogrammingsite.com/myprogs/codeform.htm | Codeform

  Codeform, a program that colours source code. Written by dwks, this is a very useful program. It can be modified for many different uses, but its primary use is formatting source code.